:root {
  --chrome-bg: #f7f9fc;
}

html {
  background: var(--chrome-bg);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

.back-to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 20;
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 999px;
  box-shadow: 0 10px 20px rgba(16, 32, 58, 0.22);
}

@media (max-width: 740px) {
  .back-to-top {
    right: 12px;
    bottom: 12px;
  }
}

.app-header {
  border-bottom: 1px solid rgba(185, 201, 221, 0.85);
  background: var(--chrome-bg);
}

.app-header-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.app-header-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #12345b;
  text-decoration: none;
}

.app-header-brand img {
  display: block;
  height: 28px;
  width: auto;
  transform: scale(1.15);
  transform-origin: center;
}

.app-footer {
  margin-top: 28px;
  border-top: 1px solid rgba(185, 201, 221, 0.85);
  background: var(--chrome-bg);
}

.app-footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.app-footer-link {
  color: #12345b;
  text-decoration: none;
  font-weight: 700;
  font-size: 12px;
}

.app-footer-link:hover {
  text-decoration: underline;
}

.policy-hero {
  margin: 28px auto 12px;
  max-width: 960px;
}

.policy-section {
  max-width: 960px;
  margin: 0 auto 14px;
  padding: 18px 20px;
}

.policy-section h2 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  color: #1f3b63;
}

.policy-section p,
.policy-section li {
  line-height: 1.7;
  color: var(--text);
}

.policy-list {
  margin: 0;
  padding-left: 18px;
}

.policy-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 10px;
  padding: 10px;
  background: rgba(247, 250, 255, 0.78);
  border-radius: 10px;
  border: 1px solid var(--line);
}

.policy-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  color: var(--primary-strong);
  font-weight: 700;
  text-decoration: none;
}

.contact-section {
  max-width: 960px;
  margin: 0 auto 14px;
  padding: 12px;
}

.contact-iframe {
  width: 100%;
  min-height: 1280px;
  border: 0;
  border-radius: 10px;
  background: #fff;
}